Abstract: In order to solve the problem of the sudden drop in the speed of a train controlled by CTCS-3 system on a continuous long heavy down grade of a high-speed railway, the methods of dividing block sections are studied. The technology of embedding the train control monitoring curve model in the traction calculation data model is adopted to realize high-precision train operation simulation and to ensure the accuracy and rationality of block section division. Based on the analysis of the problems in the design of Zhengzhou-Wanzhou High-speed Railway and the calculation of related parameters, the specific methods of block section division and the interrelations between such methods are studied in CTCS-2 and CTCS-3 train control systems to provide design reference for other new high-speed railway projects.

Key words: high-speed railway, long heavy grade, division of block sections

摘要： 为解决高速铁路连续长大坡道地段CTCS-3级控车速度突降问题，研究闭塞分区划分的方法，采用牵引计算数据模型内嵌列控监控曲线模型等技术，实现高精度列车运行仿真，保证闭塞分区划分的精准与合理。基于对郑万高铁工程设计出现的问题进行分析计算，研究CTCS-2级和CTCS-3级列控系统下闭塞分区划分的具体方法和相互关系，为其他新建高铁项目提供设计参考。

关键词: 高速铁路, 长大坡道, 闭塞分区划分